Base | Representation |
---|---|
bin | 10010010111110000… |
… | …010110111001001011 |
3 | 1212220201202211020222 |
4 | 102113300112321023 |
5 | 310344312433413 |
6 | 13021214340255 |
7 | 1265553300344 |
oct | 222760267113 |
9 | 55821684228 |
10 | 19725905483 |
11 | 8402839829 |
12 | 39a61ba68b |
13 | 1b2497a22b |
14 | d51b370cb |
15 | 7a6b77b08 |
hex | 497c16e4b |
19725905483 has 4 divisors (see below), whose sum is σ = 19759510680. Its totient is φ = 19692300288.
The previous prime is 19725905417. The next prime is 19725905489. The reversal of 19725905483 is 38450952791.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38450952791 = 769 ⋅50001239.
It is a cyclic number.
It is not a de Polignac number, because 19725905483 - 224 = 19709128267 is a prime.
It is a super-2 number, since 2×197259054832 (a number of 21 digits) contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (19725905489) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16801718 + ... + 16802891.
It is an arithmetic number, because the mean of its divisors is an integer number (4939877670).
Almost surely, 219725905483 is an apocalyptic number.
19725905483 is a deficient number, since it is larger than the sum of its proper divisors (33605197).
19725905483 is an equidigital number, since it uses as much as digits as its factorization.
19725905483 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 33605196.
The product of its (nonzero) digits is 2721600, while the sum is 53.
The spelling of 19725905483 in words is "nineteen billion, seven hundred twenty-five million, nine hundred five thousand, four hundred eighty-three".
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